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Mary wants to decorate her Christmas tre...

Mary wants to decorate her Christmas tree. She wants to place the tree on a wooden box covered with coloured paper with picture of Santa Claus on it (see Fig. 13.4). She must know the exact quantity of paper to buy for this purpose. If the box has length, breadth and height as 80 cm, 40 cm and 20 cm respectively how many square sheets of paper of side 40 cm would she require?

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PSEB-SURFACE AREAS AND VOLUMES-EXAMPLE
  1. Mary wants to decorate her Christmas tree. She wants to place the tree...

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  2. Hameed has built a cubical water tank with lid for his house, with eac...

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  3. Savitri had to make a model of a cylindrical kaleidoscope for her scie...

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  4. The curved surface area of a right circular cone of slant height 10 cm...

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  5. The height of a cone is 16 cm and its base radius is 12 cm. Find the c...

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  6. A corn cob (see Fig. 13.17), shaped somewhat like a cone, has the radi...

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  7. Find the surface area of a sphere of radius 7 cm.

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  8. The surface area of a sphere is 5544 cm^2. Find its diameter.

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  9. The hollow sphere, in which the circus motorcyclist performs his stunt...

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  10. A hemispherical dome of a building needs to be painted (see Fig. 13.21...

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  11. A wall of length 10 m was to be built across an open ground. The heigh...

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  12. A child playing with building blocks, which are of the shape of cubes,...

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  13. The pillars of a temple are cylindrically shaped (see Fig. 13.26). If ...

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  14. At a Ramzan Mela, a stall keeper in one of the food stalls has a large...

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  15. The height and the slant height of a cone are 21 cm and 28 cm respecti...

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  16. Monica has a piece of canvas whose area is 551 m^2 . She uses it to ha...

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  17. Find the volume of a sphere of radius 11.2 cm.

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  18. A shot-putt is a metallic sphere of radius 4.9 cm. If the density of t...

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  19. A hemispherical bowl has a radius of 3.5 cm. What would be the volume ...

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